Java Developer Job Descriptions, Average Salary, Interview Questions

Java is one of the most widely used programming languages, so becoming a Java developer is an honorable career that will grow in size over the next five years. Java developers may work on websites or applications that are on phones, tablets, PCs, and other smart appliances. They work to make these items run smoothly for the users.

Those wanting a career in Java development should expect to work in data-heavy environments. They will constantly provide solutions using Java to help users everywhere. Java is used nearly everywhere, and these developers may work for just one company on a specific website or application, or they may work for a firm that handles multiple companies’ websites and apps. Java developers need strong analytical skills, technical skills, and design skills.

Sample job description #1

If you love technology and want to work in a place where you can practice the art of good software design, this is a great opportunity to explore.

Key responsibilities

  • Technical analysis
  • Create development/unit testing plan
  • Code development & testing
  • Support unit, QA, and system testing of application code
  • Deliver commitments within timelines and quality parameters

Education, skills, and experience needed

  • Four-year bachelor’s in computer science, engineering, or a related technical field
  • The candidate must have 2 – 5 years hands-on development experience using Java (version 8.x) & J2EE
  • The candidate must have hands on experience with open-source application servers such as Apache Tomcat
  • Demonstrate working knowledge of Spring/Spring boot, JPA
  • Demonstrate working knowledge of Restful and SOAP web services
  • Demonstrate working knowledge of Spring Batch, Javascript, Angular.JS, and HTML5
  • Demonstrate working knowledge of leading solutions that we have employed: Maven, Jenkins, Git & Github, JSON, XML, Docker, Rest client, Postman, etc.
  • Good to have experience in No-SQL database preferably MongoDB
  • Java certifications preferred
  • A team player with good communication skills
  • Customer service orientation
  • This is a remote position and can be located anywhere in continental U.S. or Canada

Sample job description #2

Essential functions

  • Develop new applications and reporting per request
  • Provide Level 3 support for inbound data file conversion, payment processing, and data reporting
  • Work directly with our Integration Solutions department to translate development requests
  • Complete data setups and file regeneration by client request
  • Conduct local QA testing and assist other teams with QA as needed during the Software Development Life Cycle
  • Build and maintain team Standard Operating Procedure documents
  • Other tasks and projects as assigned


  • Bachelor’s degree in Computer Science, related technical degree or commensurate experience is required
  • 2+ years Java experience preferred
  • 2+ years experience with SQL preferred
  • Implementing microservices which use the spring boot framework
  • Connecting microservices to interact with databases
  • Experience working with tools like Git, Maven, JFrog, UDeploy, etc.
  • Demonstrate programming skills using JSON, Web Services, SQL, etc.
  • Working knowledge with Oracle or Mongo DB databases
  • C# experience is a plus
  • Proficient at research for troubleshooting and developing solutions
  • Ability to assess an issue and escalate as appropriate
  • Excellent communication skills, both written and verbal
  • Proactive work style and creative problem solver who can handle multiple projects, demonstrating a strong work ethic
  • Excellent attention to detail, quality, and follow-through; commitment to continuous improvement and the elimination of performance variability
  • Demonstrated ability to adapt to rapidly changing requirements with a flexible and creative approach to brainstorming, troubleshooting, and problem solving

Sample job description #3

You should have good experience in building high-performing, scalable, enterprise-grade applications, and be able to write clean code and ensure your programs run properly. We expect you to be comfortable with the HTTP protocol, REST APIs, web servers and data processing. We also expect you to be passionate about building software, able to take ownership of problems, and work well on a team as well as take individual ownership of projects (e.g. feature development).


  • Design and develop high-volume, low-latency applications for enterprise-level systems with high availability and performance
  • Create well-designed, testable, efficient code
  • Participate in all phases of the development lifecycle
  • Take initiative to improve the code you work in (i.e. leave every place better than you found it), and investigate alternatives and technologies in order to support continuous improvement


  • Strong experience in software development, and particularly in test-driven development
  • 2+ years experience of working in a Java Developer position preferred
  • Strong analytical and problem-solving skills with close attention to detail
  • You’ll get bonus points if you have:
  • Experience of object-oriented analysis and design using common design patterns
  • Good knowledge of relational databases, SQL, and ORM technologies—including JPA2 and Hibernate
  • Good knowledge of distributed analytics (e.g. Redshift, Kibana, Elasticsearch, etc.)
  • Good knowledge of at least one popular web framework (e.g. Jersey, JSF, Wicket, GWT, Spring MVC, etc.)
  • Strong communication, teamwork, and time-management skills

Average salary and compensation

The average salary for a Java developer is $97,200 per year in the United States, with a potential for cash bonuses per year. Salary may depend on the level of experience, education, and geographical location. 

LocationSalary LowSalary High
Phoenix, Arizona$102,300$125,050
Los Angeles, California$115,450$141,100
Denver, Colorado$96,200$117,600
Washington, DC$117,200$143,250
Miami, Florida$95,750$117,050
Orlando, Florida$88,350$107,950
Tampa, Florida$89,200$109,050
Atlanta, Georgia$93,600$114,400
Chicago, Illinois$107,600$131,500
Boston, Massachusetts$116,300$142,200
Minneapolis-St. Paul, Minnesota$92,700$113,350
New York City, New York$122,450$149,650
Philadelphia, Pennsylvania$99,700$121,850
Dallas, Texas$97,100$118,650
Houston, Texas$96,650$118,150
Seattle, Washington$111,950$136,850
National Average$86,450$107,900

Sample interview questions

  • What do you consider to be the major features of Java?
  • What’s the difference between a path and a classpath variable?
  • Is Java Pass By or Pass By Reference?
  • What’s the final Keyword in Java?
  • What are the access modifiers in Java?
  • What’s a static import?
  • What is Enum?
  • What is Composition?
  • Can you explain the Java Reflection API?
  • What’s the volatile keyword?
  • How would you write a custom exception?
  • What is OutOfMemoryError?
  • Can you have an empty catch block?
  • What are the types of JDBC drivers?

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